Hsie torpedo failure option

[John Pancoast]

I know that with this patch option, multiplying .4 x the wind speed substantially decreases the chance of a failure/deep runner.
However, that obviously seems very ahistorical/gamey to do. "I say, Navigator old boy, be a good chap and give me a weather report so I can set the torpedo depth correctly before this attack and therefore avoid the torpedo problems plaguing us"..... I'm a bit confused by his readme; if one does not choose this patch option, are the stock failure settings then used or are stock plus some of Hsie's settings still used for torpedo failure/deep running.